@media (hover: none) {
  /* 在不支持悬停的设备上应用的样式 */
  .header_box .lianxi_icon .icon-dianhua:hover .dianhua {
      /* 取消悬停效果 */
      width: 0px;
      left: 0px;
  }
}
body{
  width: 100%;
  box-sizing: border-box;
  overflow-x: hidden;
}
/* 手机导航栏样式 */
.iphone_nav{
  display: block;
}
.hamburger {
    cursor: pointer;
  }
  
  .hamburger input {
    display: none;
  }
  
  .hamburger svg {
    /* The size of the SVG defines the overall size */
    height: 3em;
    /* Define the transition for transforming the SVG */
    transition: transform 400ms cubic-bezier(0.4, 0, 0.2, 1);
  }
  
  .line {
    fill: none;
    stroke: #6fb5ff;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width:2;
    /* Define the transition for transforming the Stroke */
    transition:
      stroke-dasharray 400ms cubic-bezier(0.4, 0, 0.2, 1),
      stroke-dashoffset 400ms cubic-bezier(0.4, 0, 0.2, 1);
  }
  
  .line-top-bottom {
    stroke-dasharray: 12 63;
  }
  
  .hamburger input:checked + svg {
    transform: rotate(-45deg);
  }
  
  .hamburger input:checked + svg .line-top-bottom {
    stroke-dasharray: 20 300;
    stroke-dashoffset: -32.42;
  }
/* ------------------------------------------------------------------------------------- */
header{
    height: 6vh;
    /* position: relative; */
}
.header_box{
  width: 100%;
  /* padding: 0 2.5%; */
  box-sizing: border-box;
  overflow: hidden;
}
.header_box .navigation{
    background-color: white;
    width: 100%;
    position: absolute;
    top: 100%;
    left: -100%;
    height: 95vh;
    box-sizing: border-box;
    transition: all .3s ease-in-out;
    z-index: 99;
    border-top: 1px solid #bbd7f4;
}
.header_box .navigation ul{
    flex-direction: column;
    width: 95%;
    margin: 0 auto;
}
.header_box .navigation li{
    margin: 0;
    border-bottom: 1px solid rgba(0, 0, 0, .1);   
}
.header_box .navigation li a{
    display: block;
    width: 100%;
    line-height: 60px;
    box-sizing: border-box;
}
.header_box .navigation li a::before{
    content: '>';
    font-size: 20px;
    font-weight: 600;
    position: absolute;
    right: 2%;
    bottom: 0;
    z-index: -1;
    color: rgba(0, 0, 0, .1);
}
.header_box .navigation li a::after{
    right: auto;
    left: 0%;
    bottom: 18px;
}
.header_box .navigation li a.active::after{
    width: 17%;
}

.lianxi_icon{
  position: absolute;
  top: 100%;
  left: 50%;
  z-index: 100;
}
.header_box .lianxi_icon .dianhua{
width: 300px;
}
.icon-dianhua:before,
.icon-weixin:before{
  display: none;
}
.header_box .lianxi_icon .header_ewm{
  width: 100px;
}






#banner_swiper .swiper-slide img{
  width: auto;
  /* height: auto; */
  /* min-height: auto; */
}


.product_nav .nav_top h3{
  display: none;
}
.product_nav .nav_top ul{
  width: 100%;
}
.product_nav .nav_top ul li{
  margin: 0;
}
.nav_bottom{
  flex-direction: column;
}
.product_nav .nav_bottom .item{
  width: 100%;
  margin-bottom: 3%;
}
.product_nav .nav_bottom .item.active{
  width: 100%;
}
.product_nav .nav_bottom .item>.img,
.product_nav .nav_bottom .item .text{
  display: none;
}
.product_nav .nav_bottom .item .nei_box{
  opacity: 1;
  position: inherit;
  height: 46vw;
}
.product_nav .nav_bottom .item .nei_box>img{
  height: auto;
}
.product_nav .nav_bottom .item .nei_box .wenan h3{
  line-height: 6vw;
  margin-bottom: 10%;
}
.product_nav .nav_bottom .item .nei_box .wenan .iconfont{
  line-height: 10vw;
}
.product_nav .nav_bottom .item .nei_box .wenan p{
  font-size: clamp(14px, 1vw, 20px);
}

.box{
  height: auto;
}
.box .index_1{
  padding: 1vh 0;
  height: auto;
}
.box .index_1 .width{
  flex-direction: column-reverse;
}
.index_1 .left,
.index_1 .right{
  width: 100%;
}
.index_1 .right .text span{
  font-size: 16px;
}
.index_1 .right .text h3 {
  margin-bottom: 12%;
}
.index_1 .right .text p{
  line-height: 18px;
}
.index_1 .right ul{
  margin: 4% 0;
}


.box .index_2{
  height: auto;
  position: inherit;
  margin: 0;
}
.index_2 .width{
  flex-direction: column-reverse;
}
.index_2 .left,
.index_2 .right{
  width: 100%;
}
.index_2 .right .big_logo{
  margin-bottom: 5%;
}
.index_2 .right p{
  font-size: 16px;
  margin-top: 3%;
}
.index_2 .right .flex{
  margin: 5% 0;
}
.index_2 .left{
  height: 50vh;
  overflow: hidden;
  margin: 3% 0;
}


.index_3 .width{
  flex-direction: column;
}
.index_3 .left,
.index_3 .right{
  width: 100%;
  padding: 0 2%;
  box-sizing: border-box;
}
.index_3 .left{
  position: inherit;
}
.index_3 .left p{
  line-height: 20px;
  margin-top: 5%;
  margin-bottom: 10%;
}
.index_3 .left a{
  width: 40%;
  box-sizing: border-box;
  margin-bottom: 5%;
}

.index_4{
  height: 30vh;
}
.index_4 .img img{
  width: auto;
  height: 30vh;
  transform: translateX(-25%);
}
.index_4 .text{
  width: 45%;
}
.index_4 .text p{
  line-height: 18px;
  display: -webkit-box;          /* 将元素设置为弹性盒子（老式语法） */
  -webkit-box-orient: vertical;  /* 设置弹性盒子的子元素垂直排列 */
  -webkit-line-clamp: 4;         /* 限制文本最多显示 4 行 */
  overflow: hidden;              /* 隐藏超出容器范围的内容 */
  text-overflow: ellipsis;       /* 文本溢出时显示省略号 */
  word-break: break-word;        /* 允许在单词内换行以避免溢出 */
  margin-bottom: 15%;
}
.index_4 .text a{
  width: 50%;
  padding: 5% 0;
}
.index_5 .width{
  flex-direction: column-reverse;
}
.index_5 .left,
.index_5 .right{
  width: 100%;
}


.index_5 .right .right_top{
  margin-bottom: 5%;
}
.index_5 .right .right_top .text{
  width: 50%;
  box-sizing: border-box;
}
.index_5 .right .right_top .text h3{
  font-size: 16px;
  line-height: 20px;
}
.index_5 .right .right_top .img{
  width: 47%;
  box-sizing: border-box;
}
.index_5 .right .right_top .text p{
  line-height: 16px;
}

.index_5 .left{
  margin-top: 5%;
}












.width{
    width: 95%;
}
.header_box .logo img{
    height: 3vh;
    padding: 4% 0;
}